What is surface area? What is the equation for a trapezoid to find area?
How can we use what we know about other shapes if you don’t know the equation for a trapezoid?
What is the middle of the XY Coordinate axis called?
Which direction does the x-axis go?
Which direction does the y-axis go?
What do you know about the amount of points on the graph when making polygons on the XY graph?

the sum of all the areas of all the shapes that cover the surface of the object

1/2 X (b1+b2) X h

2 pair of sides parallel only; if other two it becomes a parallelogram; if other two are same length _isosceles trapezoid(like isosceles triangle with two sides same length)

Step-by-step explanation:

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

0,0

step-by-step explanation: